ZUSAMMENFASSUNG:Durch SUMMARY:Reactive, hydrophilic, insoluble polymers which contain nitrofluorobenzenesulfofonyl groups were prepared by FRIEDEL-CRAFTS reaction of 4-fluorobenzenesulfonyl chloride with polystyrene and subsequent sulfonation and nitration.Reactive, hydrophilic, insoluble polymers containing dinitrofluorophenyl groups were prepared by nitration of copolymers obtained from 4-or 3-fluorostyrene, methacrylic acid, and divinylbenzene.The chemical reactivity of these polymers especially their ability to bind proteins were investigated. The reaction of these polymers with diastase and papain gave enzyme resins; their properties were investigated.Die Untersuchungen uber reaktionsfahige Tragersubstanzen fur physiologisch wichtige Proteine hatten zu der Entwicklung nitrierter Copolymerisate aus ungesattigten Carbonsauren und Methacrylsaure-rnfluoranilid 1) gefuhrt. Die gute Reaktionsfahigkeit und das vergleichsweise hohe Proteinbindungsvermogen dieser Tragersubstanzen beruhten